Abstract
Laboratory-raised Northern blue jays (Cyanocitta cristata) have been observed tearing pieces from pages of newspaper and utilizing them as tools to rake in food pellets which were otherwise out of reach. The frequency of this behavior was dependent upon the motivational state of the jay and the presence of food pellets.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1076-1078 |
| Number of pages | 3 |
| Journal | Science |
| Volume | 180 |
| Issue number | 4090 |
| DOIs | |
| State | Published - 1973 |
| Externally published | Yes |
ASJC Scopus subject areas
- General